This progresses into a whit-whit-whit with further agitation (May, NJ).
intermediate call

whit-whit

Calls by several Wood Thrushes shortly after sunset (June, PA).

The Eastern Bluebird has a chatter-like call used both as an alarm call and, as in this case, amongst birds in a migrating flock (about a dozen birds, Oct, PA).
Also heard are trill-like interaction calls, at 6-9 and 19-23s.

trill-like call

Aggressive reaction between two birds, with a third singing (Oct, PA).

These are soft contact calls between several birds, and were barely audible (Jan, PA)

1 comment:

I just found this blog and think it is fabulous. I am organizing morning group bird sits at a local pond, and this morning, I heard a "wheeze" I couldn't identify. Luckily, the local audubon society publishes an online profile of the location, listing many of the birds heard in the fall. But allaboutbirds.org didn't have the call I was looking for. You recorded the exact thing I heard this morning: Hermit Thrush calls!! Thanks for this great website.

Peterson Field Guide to Bird Sounds of Eastern North America. Nathan Pieplow, 2017. Highly recommended, includes almost all known vocalizations of eastern US birds, with spectrograms and detailed analysis. Excellent!

Stokes Field Guide to Bird Song, Eastern Region, by Lang Elliot. 3 CDs. Of commercial recordings, this has the most comprehensive collection of songs and calls.

The Birds of North America Online (BNA). Comprehensive information on all aspects of life history, including audio and video. By subscription.

The Singing Life of Birds. Donald Kroodsma, Houghton Mifflin, 2005. Terrific book (plus CD), a must read.

The Songs of Wildbirds. Lang Elliott., Houghton Mifflin, 2005. Excellent photos with high quality recordings including some rare ones such as the flight song of the Western Meadowlark.

The Sound Approach to Birding. A guide to understanding bird sound. A. van de Berg, M Constantine, M. Robb. Superb discussion of bird calls and song with 2 CDs.